564570813 has 4 divisors (see below), whose sum is σ = 752761088. Its totient is φ = 376380540.

The previous prime is 564570803. The next prime is 564570817. The reversal of 564570813 is 318075465.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 564570813 - 2¹⁸ = 564308669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564570817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94095133 + ... + 94095138.

It is an arithmetic number, because the mean of its divisors is an integer number (188190272).

Almost surely, 2^564570813 is an apocalyptic number.

It is an amenable number.

564570813 is a deficient number, since it is larger than the sum of its proper divisors (188190275).

564570813 is a wasteful number, since it uses less digits than its factorization.

564570813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188190274.

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 564570813 is about 23760.6989164881. The cubic root of 564570813 is about 826.4935603941.

The spelling of 564570813 in words is "five hundred sixty-four million, five hundred seventy thousand, eight hundred thirteen".